package com.sky.service.impl;

import com.sky.dto.GoodsSalesDTO;
import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.ReportService;
import com.sky.service.WorkspaceService;
import com.sky.vo.*;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;

import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@Slf4j
public class ReportServiceImpl implements ReportService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WorkspaceService workspaceService;
    @Override
    public TurnoverReportVO getTurnoverStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> datelist =new ArrayList<>();
        datelist.add(begin);
        while (!begin.equals(end))
        {
            begin= begin.plusDays(1);
            datelist.add(begin);
        }
        List<Double> turnoverList=new ArrayList<>();
        for (LocalDate date : datelist) {
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            Map map=new HashMap<>();
            map.put("begin",beginTime);
            map.put("end",endTime);
            map.put("status", Orders.COMPLETED);
  Double turnover= orderMapper.sumByMap(map);
  turnover=turnover==null?0.0:turnover;
  turnoverList.add(turnover);
        }
        return TurnoverReportVO.builder()
                .dateList(  StringUtils.join(datelist,","))
                .turnoverList(StringUtils.join(turnoverList,","))
                .build();
    }

    @Override
    public UserReportVO getuserStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> datelist =new ArrayList<>();
        datelist.add(begin);
        while (!begin.equals(end))
        {
            begin= begin.plusDays(1);
            datelist.add(begin);
        }
        List<Integer> newUserList=new ArrayList<>();
        List<Integer> totalUserList=new ArrayList<>();
        for (LocalDate date : datelist) {
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            Map map=new HashMap<>();
            map.put("end",endTime);
            Integer totalUser=userMapper.countByMap(map);
            map.put("begin",beginTime);
            Integer newUser=userMapper.countByMap(map);
            totalUserList.add((totalUser));
            newUserList.add(newUser);

        }
        return UserReportVO.builder()
                .dateList(StringUtils.join(datelist,","))
                .totalUserList(StringUtils.join(totalUserList,","))
                .newUserList(StringUtils.join(newUserList,","))
                .build();
    }

    @Override
    public OrderReportVO getOrderStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> datelist =new ArrayList<>();
        datelist.add(begin);
        while (!begin.equals(end))
        {
            begin= begin.plusDays(1);
            datelist.add(begin);
        }
        List<Integer> orderCountList=new ArrayList<>();
        List<Integer> validorderCountList=new ArrayList<>();
        for (LocalDate date : datelist) {
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            Integer orderCount = getOrderCount(beginTime, endTime, null);
            Integer validOrderCount = getOrderCount(beginTime, endTime, Orders.COMPLETED);
            orderCountList.add(orderCount);
            validorderCountList.add(validOrderCount);
        }
        Integer totalOrderCount = orderCountList.stream().reduce(Integer::sum).get();
        Integer validOrderCount = validorderCountList.stream().reduce(Integer::sum).get();

        Double orderCompletionRete=0.0;
        if(totalOrderCount!=0)
        {
            orderCompletionRete= validOrderCount.doubleValue()/totalOrderCount;
        }

        return OrderReportVO.builder()
                .dateList(StringUtils.join(datelist,","))
                .orderCountList(StringUtils.join(orderCountList,","))
                .validOrderCountList(StringUtils.join(validorderCountList,","))
                .totalOrderCount(totalOrderCount)
                .validOrderCount(validOrderCount)
                .orderCompletionRate(orderCompletionRete)
                .build();
    }

    @Override
    public SalesTop10ReportVO getSalesTop10(LocalDate begin, LocalDate end) {
        LocalDateTime beginTime = LocalDateTime.of(begin, LocalTime.MIN);
        LocalDateTime endTime = LocalDateTime.of(end, LocalTime.MAX);
        List<GoodsSalesDTO>  salesTop10 = orderMapper.getSalesTop(beginTime, endTime);
        List<String> names = salesTop10.stream().map(GoodsSalesDTO::getName).collect(Collectors.toList());
        String nameList = StringUtils.join(names, ",");
        List<Integer> number = salesTop10.stream().map(GoodsSalesDTO::getNumber).collect(Collectors.toList());
        String numberList = StringUtils.join(number, ",");
        return SalesTop10ReportVO.builder()
                .nameList(nameList)
                .numberList(numberList)
                .build();
    }

    @Override
    public void exportBusinessData(HttpServletResponse response) {
        LocalDate dateBegin = LocalDate.now().minusDays(30);
        LocalDate dateEnd = LocalDate.now().minusDays(1);
        BusinessDataVO businessDataVO = workspaceService.getBusinessData
                (LocalDateTime.of(dateBegin, LocalTime.MIN), LocalDateTime.of(dateEnd, LocalTime.MAX));

        InputStream in = this.getClass().getClassLoader().getResourceAsStream("template/运营数据报表模板.xlsx");

        try {
            XSSFWorkbook excel=new XSSFWorkbook(in);
            XSSFSheet sheet= excel.getSheet("Sheet1");
            sheet.getRow(1).getCell(1).setCellValue("时间"+dateBegin+"至"+dateEnd);
            XSSFRow row = sheet.getRow(3);
            row.getCell(2).setCellValue(businessDataVO.getTurnover());
            row.getCell(4).setCellValue(businessDataVO.getOrderCompletionRate());
            row.getCell(6).setCellValue(businessDataVO.getNewUsers());
             row = sheet.getRow(4);
            row.getCell(2).setCellValue(businessDataVO.getValidOrderCount());
            row.getCell(4).setCellValue(businessDataVO.getUnitPrice());

            for (int i = 0; i < 30; i++) {
                LocalDate date = dateBegin.plusDays(i);
               BusinessDataVO businessDate=workspaceService.getBusinessData
                       (LocalDateTime.of(date,LocalTime.MIN),LocalDateTime.of(date,LocalTime.MAX));
               row= sheet.getRow(7 + i);
               row.getCell(1).setCellValue(date.toString());
                row.getCell(2).setCellValue(businessDate.getTurnover());
                row.getCell(3).setCellValue(businessDate.getValidOrderCount());
                row.getCell(4).setCellValue(businessDate.getOrderCompletionRate());
                row.getCell(5).setCellValue(businessDate.getUnitPrice());
                row.getCell(6).setCellValue(businessDate.getNewUsers());

            }
            ServletOutputStream out = response.getOutputStream();
            excel.write(out);
            out.close();
            excel.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }

    }

    private Integer getOrderCount(LocalDateTime begin,LocalDateTime end,Integer status)
    {
        Map map=new HashMap<>();
        map.put("begin",begin);
        map.put("end",end);
        map.put("status",status);
        return orderMapper.countByMap(map);
    }
}
